METHOD OF OPTIMAL ADAPTIVE CONTROL OF DRILLING AND FLUSHING OF OIL AND GAS WELLS Russian patent published in 2019 - IPC E21B44/00 G06G7/48 

FIELD: soil or rock drilling.

SUBSTANCE: invention relates to drilling oil and gas wells and can be used for optimum process control. Technical result is achieved by a method for rapid optimal control of drilling and well drilling processes, in which adaptation of a deterministic model of fractional-power type with three control parameters to conditions on the working face by adjusting its coefficients, optimum consumption of drilling fluid is calculated by volume of drilled rock, axial load on bit, bit rotation speed and well is drilled at optimal conditions. Method provides for multiple updating of drilling model coefficients as per the results of well measurements of drilling speed, calculation of optimal flow rate of solution, axial load on bit and speed of its rotation by criterion "maximum mechanical speed", drilling on calculated optimum parameters.

EFFECT: improving accuracy of optimal control of drilling and flushing modes and increasing mechanical speed of well boring due to optimization of control in mathematical model with three controlled parameters.

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